Yes there will be a series six, it will be in two parts the first seven episodes will air in the spring and the other six will air around autumn time.
The Doctor's companions in Series 6 are Amy Pond, and Rory Williams.
Doctor Who series 6 will start on the 23rd April 2011, with 'The Impossible Astronaut' :)
2011.
Series 6 is expected to be shown sometime in Spring of 2011.
Steven Moffat confirmed in Doctor Who Confidential that River would be in series 6, and that we will find out who she is.
YES
Yes.
Probably awhile after the Series 6 Finale or the 2011 Christmas Episode.
The Spaceman in Series 6 episode 1 killed a future version of the 11th Doctor.
Yes.
October 1th, 2011
Matt Smith will be staying on for series six and possibly a couple more series after that.